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प्रश्न
A certain pendulum clock with a 12 h dial happens to gain 1.0 min/day. After setting the clock to the correct time, how long must one wait until it again indicates the correct time?
विकल्प
720 min
720 days
60 days
12 min
MCQ
उत्तर
720 days
Explanation:
The clock will show correct time after it gains 12 × 60 = 720 minutes in 720 days.
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